<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<style>
  p {
    text-indent: 30px;
    padding-left: 30px;
    border-left: 2px solid red;
  }

  .no-indent {
    text-indent: 0;
    padding-left: 0;
    border-left: none;
  }
</style>

<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Adipisci alias aliquid dolorem error esse ex labore pariatur qui reprehenderit similique.</p>

<p class="no-indent">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquam debitis ea esse facere iusto laborum neque odit qui rerum voluptas.</p>
</body>
</html>